Compute sin 105 from function of 60&45
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sin (105)
sin (60+45)
sin 60 cos45 +cos60sin45.
root 3 /2 *1/root 2+ 1/2 *1/root2
1+root3 / 2root2 m
sin (60+45)
sin 60 cos45 +cos60sin45.
root 3 /2 *1/root 2+ 1/2 *1/root2
1+root3 / 2root2 m
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